Pump.



L. 1. BLACK.

PUMP.

APPLICATION FILED 00121. 1915.

Patented 00. 24,1916.

2 SHEETS$HEET I.

L. J. BLACK.

PUMP.

APPLICATION FILED OCT- 21. 1915.

1,202,153. Patented Oct. 24,1916.

2 SHEETS-SHEET 2.'

'rrnn STATES Ar rice.

LEE 0'. BLACK, OF BEAUMONT, TEXAS.

PUMP. I v

Specification of Letters Patent.

Application filed October 21, 1915. Serial No. 57,063.

- which is formed of a single casting removably mounted on the pump cylinder, and carrying all the valves of the pump, thereby obtaining certain advantages as will be pointed out hereinafter.

The invention also has for its object to provide a valve chest of novel construction and improved means for securing the same to the pump cylinder.

In order that the invention may be better understood, reference ishad to the accompanying drawings, in which Figure 1' is an elevation of the pump partly in section on the line 11 of Fig. 3; Fig. 2 is a cross-section of the valvechest onthe line 2-2of Fig. 3; Fig. ,3 is a plan view, with parts in section, on the line 33 of Fig. 2, and Fig. 4 is a horizontal section on the line 44 of Fig. 2.

Referring specifically to the drawings, 10 denotes the cylinder of the pump, the same containing a liner 11 in which the pump plunger 12 reciprocates. The pump illustrated is a steam pump, the steam engine cylinder being shown at 13, and the piston of the latter being directly connected to the pump plunger rod 14. It is to be understood, however, that the invention is not limited to this type of pumps, asany other suitable power and driving connections may be employed.

The pump cylinder 10 is provided with a valve chest 15 which carries all the valves of the pump and is entirely separate from the pump cylinder and removably connected thereto. The pump cylinder is a single casting which is bolted to the cylinder over the end ports 16 and 17 thereof. The base of the valve chest has an encircling outstanding flange 18 which matches a flange 19 on the cylinder. Bolts 20 passing through the flanges 18 and 19 secure the valve chest to the cylinder, Additional fastening means for the valve chest are also provided, the same comprising a row of bolts indicated at 21,22, 23, 24 -a-nd25, *res'pectively',,"the same projecting from the base of the valve chest and being here threaded to screw into the cylinder wall. The outer ends of the lastmentioned bolts are threaded to receive nuts Patented Oct. 24, 1916.

26, and the latter, with the exception of the chamber 30, provided with an outlet 31.

Beneath thedischarge chamber, and separated therefrom by a partition 32, are four inlet chambers 33, 34, 35, and'36, respectively, separated from each other by a transverse partition 37 and a longitudinal partition 38 which cross and extend between the bottom wall 39 of the valve chest and the partition 32, and also between the side walls of the valve chest. These walls and. partitions are all cast integral with the valve chest.

The chambers 33 and 35 have inlet ports 40 which are in communication with the port 16, and the chambers 34 and 36 have inlet ports 41 which are in communication with the port 17.

That portion of the bottom wall 39 of the valve chest which seats over the inlet chamber 29 of the cylinder 10 has valved inlet ports 42 establishing communication between said chamber and the respective inlet chambers 33, 34, 35 and 36. The valve of the chamber 33 is shown at 43, the valve of the chamber 34 at 44, the valve of the cham ber 35 at 45 and the valve of the chamber 36 at 46.

In the partition 32 are valved ports 47 providing outlets for the inletchambers 33, 34, 35 and 36 and establishing communication between said chambers and the discharge chamber 30. The outlet valve of the nut of the bolt 21, also serve to secure cling to the right, the pump takes in water from the inlet chamber 29 and through the valves. 43 and 45, and discharges into the chamber 30 through the valves Y49 and '51. 1

On the oppositestrokeof the plunger, the pump takes-in waterthrough the valves for the valve stem and also serving as an abutment for one end of the valve spring. The bolt 22 carries a clamp 27 for holding the covers of the valves 43 and 44, the clamp for the covers of the valves 48 and 49 is carried by the bolt 23, the clamp for the covers of theivalves 50 and 51 is carried by the bolt 24, and the clamp for the covers ofthe valves45 and 46 is carried by the bolt 25.

The bolts 21, 22, 23, 24 and 25 seatin the partition 38, the same being vertically apertured for this purpose. The bolts 21, 23 and 24 also pass throughthe discharge chamber 30, and in the latter, between the top thereof, and the bottom formed by the partition 32,, are. Webs 58 which are apertured to house the bolts 23 and 24. From the side wall of the chamber extends a web 54 which is apertured for the bolt 21. It will therefore be seen that where the bolts pass through the water chambers of the valve chest, they are completely covered and housed, which prevents the water or other fluid from passing along the bolts and leaking out at the top. The bolts are alsoprotected against corrosion.

In the operation of pumpsit is a common occurrence, from one cause or another, for the fluid end of the pump to crack, orthe valves to cut around, especially when handling slush in drilling wells, the same containing much grit, and the valves are also liable to be cut by the sand in the fluid. In either case, the destruction or ruin of a valve seat, in the old method of'casting the valve chest integral with the pump cylinder, renders the entire valve chest and cylinder useless. However, by casting the valve chest in one piece, separate from the cylinder, the cutting of a valve requires only a new valve chest, and the cracking of the cylinder would not destroy the valve chest. It will therefore be evident that the up-keep and maintenance of the pump is considerably cheapened. With the 'valve chest and cylinder cast in one piece it is also impossible to observethe interior part of the casting, and note the natural casting defects, such as blow holes, shrinkage, cracks, etc., but where the valve chest is cast separate, these defects are easily observed, as a complete view of the interior may be had. It is also possible to observe all ports, cored holes, etc., and to determine whether there has been a shifting of cores, or any other trouble that would be likely to reduce the thickness of the metal in one place and add to the thickness in an- 5' other. A further advantage of the present 6 de n. is ha a veif o m hi kn ss, of m ta 1. A valve chest for pumps formed in i one piece with a discharge chamber and a plurality of inlet chambers separated by partitions, said inlet chambers having valved inlets and outlets, the latter opening into the discharge chamber, and fastening bolts for the valve chest passing therethrough and through one of the aforesaid partitions, certain of. said bolts also passing through the discharge chamber, and said chamber having webs through which the last-mentioned bolts pass and in which they 7 are housed and shut off from the interior of the discharge chamber.

2. i A valve chest for pumps formed in one piece with a discharge chamber and a plurality of inlet chambers separated by partitions, said inlet chambers having valved inlets and outlets, the latter opening into the discharge chamber, fastening bolts for the valve chest passing therethrough and through one of the aforesaid partitions, certain of said bolts also passing through the discharge chamber, and said chamber having webs through which the last-mentioned bolts pass and in which they are housed and shut ofi from the interior of the discharge chamber. the valve chest also having openings in line with the aforesaid valved inlets and outlets, closures for said openings, and holding means for the closures carried by the aforesaid bolts.

3. A valve chest for pumps formed in one piece with a discharge chamber and a plurality of inlet chambers separated by partitions, said inlet chambers having valved i11- lets and outlets, the latter opening into the discharge chamber. fastenin bolts for the valve chest passing therethrough and through one of the aforesaid partitions, certain of said bolts also passing through the discharge chamber, and said chamber having webs through which the last-mentioned bolts pass and in which they are housed and shut off from the interior of the discharge chamber, the valve chest also having openings in line with the aforesaid valved inlets and outlets, closures for said openings, nuts screwed on the outer ends of the aforesaid bolts, and clam s mounted on the bolts under the nuts, said clamps engaging the 010- sures;

4. A valve chest for pumps formed in one piece with a discharge chamber and a plurality of inlet chambers separated by partitions, said inlet chambers having. valved inlets and outlets, the latter opening; into, the

discharge chamber, fastening bolts for the chamber, and a bolting flange on the base of valve chest passing therethrough and the valve chest, 1 through one of the aforesaid partitions, cer- In testimony whereof I aflix my signature tain of said bolts also passing through the in the presence of two witnesses.

discharge chamber, and said chamber hav- 7 LEE J. BLACK.

ing webs through which the last-mentioned Witnesses: bolts pass and in which they are housed and NORMAN P. ERWIN, shut off from the interior of the discharge CLIFFORD H. SAUNDERS,

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

